CVE-2025-20685: mediatek, inc. mt6890, mt7915, mt7916, mt7981, mt7986 Heap-based Buffer Overflow

Vulnerability summary

CVE-2025-20685 is a high (CVSS 8.8) Heap-based Buffer Overflow vulnerability in mediatek, inc. mt6890, mt7915, mt7916, mt7981, mt7986. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28.2% of scored vulnerabilities.

Timeline

1. 08-07-2025
   PublishedVulnerability first disclosed.
2. 08-07-2025
   Last modifiedVulnerability information updated.

Description

In wlan AP driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote (proximal/adjacent) code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00416226; Issue ID: MSV-3409.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().